两个数组之间的显示元素差异

function getArrayDifference(arr1, arr2) {
  var difference = [];
  
  // 遍历第一个数组，将不在第二个数组中的元素添加到差异数组中
  for (var i = 0; i < arr1.length; i++) {
    if (arr2.indexOf(arr1[i]) === -1) {
      difference.push(arr1[i]);
    }
  }
  
  // 遍历第二个数组，将不在第一个数组中的元素添加到差异数组中
  for (var j = 0; j < arr2.length; j++) {
    if (arr1.indexOf(arr2[j]) === -1) {
      difference.push(arr2[j]);
    }
  }
  
  return difference;
}

var array1 = [1, 2, 3, 4, 5];
var array2 = [3, 4, 5, 6, 7];
var difference = getArrayDifference(array1, array2);
console.log(difference); // 输出 [1, 2, 6, 7]

array1 = [1, 2, 3, 4, 5]
array2 = [3, 4, 5, 6, 7]
difference = list(set(array1) - set(array2))
print(difference)  # 输出 [1, 2, 6, 7]